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Discussion Starter · #1 ·
Hi,

anyone that can help me pls, i have changed the cam chain, and checked the markings many of times, Secondary chains bank1 on the stripes, and bank 2 on the dots with the copper markings.
then main chain marking son the black link lined up with the strip on the casing.
Crankside, copper marking on the dot and lined up with the casing.

Now when i start it, it starts then cuts out.
Codes that are getting thrown out is the P1136,P1111,P0335, not sure what more to do, as i have checked the vvt gear, vvt solenoid...

Any help PLS?
 

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friggin 2 easters with the wife today, but it was a nice day i hope everyone had a nice easter!
i actually did a timing chain on friday but opted not to take pictures because of my obsessive compulsive nature. (after you RTV the case back together you have to wait for it to cure and i just look at the pictures and videos searcing for issues until i can start it.)

that first picture of the front of the engine you posted looks incorrectly timed to me.
im not sure if i have ever seen anyone time an engine the way you are describing but im sure its possible.
i always use the chain with the designated marks in reference to the crank and cams directly. no case involved after setting tdc or at all but there is a mark on the US models on the clutch fan used to set TDC. so not even the case really at all that i can think of.

the intake cams have the line and on it and i think a small dot.
if the picture you posted it the chain sitting after installation but you havent moved anything. then i think thats where your issue is going to be.
(edit) after looking i cant tell 100% but i dont know if you are at TDC on cyl1 either. (edit again. its close to tdc but easy to check with a long straw now in cyl 1)

that left side swing arm is a life savor for when something moves.
here are a couple of the older ones ive done.

take note of the intake cams lines in reference to the darkened chain link.






Motor vehicle Automotive fuel system Automotive air manifold Vehicle Automotive design

Motor vehicle Hood Automotive tire Automotive design Automotive exterior


it took me a while to be comfy with it but you dont need to pull the valve covers off to do the job, or even the intake but these are older pictures.
i should mention that i have a US model of vq40, i dont know if there are any differences between your RHD model or not.
 

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Have you checked Youtube?? there are several videos showing you the setup on VQ40DE motors...applies to Xterras, Pathfinders & Frontiers since they all use the same VQ motor....

You might want to turn the volume down on this second video....the music is ANNOYING!! But the info is relevant..
 

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Discussion Starter · #6 ·
Hi @AndysLog
if i look at ur picture and mine, mine are the same, my black marks are on the marks of the chain, and the sec marks are on the marks of the gears.
i am not sure if we are missing each other, i think the image might be showing wrong.
will strip it and show clearer marks if that ok with u?
 

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Daniel,

Can you get a better pic of where you timing marks are at on the cams & on the crank please?
To be sure, you are at the correct TDC for piston #1?

Also, an observation, your cams look scored and dry in those pics, but could be just the angle of the pic or something?

Another trick is to remove the solenoids and clean them with some throttle body cleaner and then get a little fresh oil in there. Verify your electrical connectors are good to. When doing jobs like this, any small accident can happen and won't be thought of till it causes issues (bending connector pins, dirt and grime on connector pins, connector locks breaking so they don't snap on anymore, etc)
 

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Hi @AndysLog
if i look at ur picture and mine, mine are the same, my black marks are on the marks of the chain, and the sec marks are on the marks of the gears.
i am not sure if we are missing each other, i think the image might be showing wrong.
will strip it and show clearer marks if that ok with u?

the pictures may be telling a different story then.
i would track down the codes themselves and see if they are related to electric connections, wires being loose ect. good place to start just in case so you dont pull the whole thing apart then.
 

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Discussion Starter · #10 ·
the pictures may be telling a different story then.
i would track down the codes themselves and see if they are related to electric connections, wires being loose ect. good place to start just in case so you dont pull the whole thing apart then.
thanks Andy,
i have checked the wires and the continuity between the solenoid and the ecu, and all checks out correct.
had the ecu checked and they replaced a part in there, so not sure whats next,. i stripped it today and doubled checked the timing and they all on the mat marks on the chain, and lined up.
Tire Automotive tire Wheel Motor vehicle Gear
 

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those cam marks and chain looks correct. the original picture its very hard to tell.

the crank to me doesnt look at tdc still, but im not there doing the job so its not easy to say.
plus the heads are timed separately so unsure if those are timed right.
 

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Discussion Starter · #13 ·
those cam marks and chain looks correct. the original picture its very hard to tell.

the crank to me doesnt look at tdc still, but im not there doing the job so its not easy to say.
plus the heads are timed separately so unsure if those are timed right.
what you mean the heads are timed differently? if the cyl 1 cam lobes are up pointing to each other, those cams should be synced, and if cyl 5 lobes are point to each other those should be in synced, then putting on the vvt gear and 2nd gear with them being on the mat marks of the sec chain, then they are in synced?
 

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what you mean the heads are timed differently? if the cyl 1 cam lobes are up pointing to each other, those cams should be synced, and if cyl 5 lobes are point to each other those should be in synced, then putting on the vvt gear and 2nd gear with them being on the mat marks of the sec chain, then they are in synced?
im saying its a separate process and i cant tell from the pictures if everything is 100% right.
it looks right but because i can only comment on the few photos we have and not comment off of doing the job itself and knowing what process was done. its hard to say.

did you have any check engine lights or these issues before doing this job?
why did you do the timing chain job? the inside of that case looks brand new.
 

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The lobes can be pointing together and yet still be at the wrong TDC. Cam lobes for cylinders 3 and 5 will be pointed wrong, if you are using the wrong TDC.

As for the cam chains, they can be ornery and skip a tooth if not careful.
 

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Sometimes too, a code will be thrown when something much different is causing a problem. If you removed valve covers, double check the coil pack connections are on the right coil packs. This has happened a couple of times with myself and others that the wrong connector is on the wrong coilpack.
Sometimes the cam angle sensors end up with crud on them and cause problems. Most of the diagnostics in the system just check to see if the sensor is working, not necessarily if it is correct.
I even have had the system tell me the crank angle sensor is bad, when in reality it was a couple cam angle sensors that needed to be replaced. It's not a perfect system.

Also, we are all human (I think), make sure nothing foreign has been left in the engine by accident.... it tends to happen...

Murphy loves practical jokes ;)
 
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